Bounces from Yahoo

Kevin Miller kevin.miller at
Tue Dec 2 19:11:54 GMT 2014

Every now and then, my users will send to Yahoo and the mail bounces.  The cause is duplicate subject headers.

SOMEONE at on 12/1/2014 3:52 PM
            Diagnostic code = NoDiagnostic; Reason code = TransferFailed; Status code = 500
            < #5.0.0 SMTP; 554 Message not allowed - Headers are not RFC compliant[291]>

There's a similar thread over in the Baruwa neighborhood, but apparently it's a MailScanner bug.  They mention a fix over there but I don't know that it's made it to github for MailScanner yet.

Anyone else having this issue?  Any patch files out for it?

Running on:
Linux 2.6.18-398.el5 #1 SMP Tue Sep 16 20:50:52 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux
This is CentOS release 5.11 (Final)
This is Perl version 5.008008 (5.8.8)

This is MailScanner version 4.84.5

Kevin Miller
Network/email Administrator, CBJ MIS Dept.
155 South Seward Street
Juneau, Alaska 99801
Phone: (907) 586-0242, Fax: (907) 586-4500
Registered Linux User No: 307357 

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